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joshhboss
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16K host entries

Sat Jun 19, 2021 7:08 pm

im looking for some 10 gig switches and i noticed a few on amazon that said host take 16k. What happens if the network actually gets more then 16k hosts, will the network then drop?
Sorry if its a silly question im just trying to understand mikrotik.

Thank you
 
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chechito
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Re: 16K host entries

Sat Jun 19, 2021 7:45 pm

is not a MikroTik thing

fundamentals of switching taken from some internet site:

When mac table is full, the switch fails over to broadcast mode and starts to broadcast the traffic to all ports in that VLAN
 
pe1chl
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Re: 16K host entries

Sat Jun 19, 2021 7:48 pm

The 16k hosts are per network segment, not for the entire network.
By the time you get any close to that, you should long have divided the network into multiple segments with routing between them, rather than switching.
 
joshhboss
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Re: 16K host entries

Sat Jun 19, 2021 9:55 pm

Thank you so much for the clarity
 
joshhboss
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Re: 16K host entries

Wed Jan 18, 2023 3:15 pm

The 16k hosts are per network segment, not for the entire network.
By the time you get any close to that, you should long have divided the network into multiple segments with routing between them, rather than switching.
Sorry coming back to get some more clarity lol .. does this mean.. 16k per vlan ? 2 vlans .? 32k Macs in the host table ?
 
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BartoszP
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Re: 16K host entries

Wed Jan 18, 2023 3:22 pm

Half a year later still the question is valid? You did nothing or you just reached the limit?
 
pe1chl
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Re: 16K host entries

Wed Jan 18, 2023 3:30 pm

The limit is for the number of hosts, it is independent of the number of VLANs.
So it is still 16k hosts, even when a host is on more than one VLAN (trunked) it still counts as one.
So to overcome this limit, you need to make physical network segments (multiple switches connected to different ports of a router), not subdivisions in VLANs.
 
joshhboss
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Re: 16K host entries

Wed Jan 18, 2023 8:38 pm

Sorry guys no I actually havent had an issue yet but im entering another event and just wanted to make sure I didnt have any issues..

:)

Image
 
pe1chl
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Re: 16K host entries

Wed Jan 18, 2023 9:28 pm

Instead of posting a photo it would have been more useful to describe your usage scenario and network layout.
It looks like it is "providing internet at an event", e.g. via multiple WiFi APs or connections to other people's switches?
In that case, make sure you wire things differently than shown in the photo.
 
joshhboss
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Re: 16K host entries

Wed Jan 18, 2023 10:21 pm

Instead of posting a photo it would have been more useful to describe your usage scenario and network layout.
It looks like it is "providing internet at an event", e.g. via multiple WiFi APs or connections to other people's switches?
In that case, make sure you wire things differently than shown in the photo.
Brutal man.. I just started getting it up lol.. but here is more or less what I was planning to do..

Image

Its a little crazy with the 3 routers but im trying to the hang of mikrotik so I have a pfsense box running just incase I have to jump ship.. and just jump on a network I already know how to configure and troubleshoot.. But the the goal is to get better at mikrotik and have the whole core stack mikrotik..

Oh and the top CRS317 going to core switch is incase I just want to hand off Publics layer 2..

And you pretty much have the right idea.. its going to have production wifi, ticketing, artists, merch, anda few areas of open wifi.. I was hoping to get around 4k clients on the CCR2004

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